	picker-view{
		height: 100%;
		width: 100%;
		background-color: white;
	}
	
	/* middle */
	.middle {
		position: fixed;
		left: 50%;
		top: 50%;
		opacity: 0;
		pointer-events: none;
		perspective: 2500upx;
		transition: all .3s ease-in-out;
	}

	.middle.show {
		transition-delay: .3s;
		transform: translate(-50%, -50%);
		pointer-events: auto;
		opacity: 1;
	}

	.middle.hide {
		transform: translate(-50%, -50%);
		opacity: 0;
		pointer-events: none;
	}

	.middle_view {
		background-color: #FFF;
		border-radius: 15upx;
		overflow: hidden;
		width: 80vw;
	}

	/* bottom */
	.bottom {
		position: fixed;
		left: 0;
		bottom: 0;
		pointer-events: none;
		perspective: 2500upx;
		transition: all .3s ease-in-out;
		transform: translateY(200%);
	}

	.bottom.show {
		transform: translateY(0);
		pointer-events: auto;
	}

	.bottom.hide {
		transform: translateY(200%);
		pointer-events: none;
	}

	.bottom_view {
		width: 100vw;
		background-color: white;
	}

	/* top */
	.top {
		position: fixed;
		left: 0;
		top: 0;
		pointer-events: none;
		perspective: 2500upx;
		transition: all .3s ease-in-out;
		transform: translateY(-200%);
	}

	.top.show {
		transform: translateY(0);
		pointer-events: auto;
	}

	.top.hide {
		transform: translateY(-200%);
		pointer-events: none;
	}

	.top_view {
		width: 100vw;
		background-color: white;
	}

	/* mask */
	.mask {
		position: fixed;
		top: 0;
		left: 0;
		height: 100vh;
		width: 100vw;
		opacity: 0;
		background-color: rgba(0, 0, 0, .6);
		transition: all .3s ease-in-out;
		pointer-events: none;
	}

	.mask.show {
		opacity: 1;
		pointer-events: auto;
	}

	.mask.hide {
		opacity: 0;
		transition: all .3s ease-in-out .3s;
		pointer-events: none;
	}

	.flex_column_c_c {
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
	}

	.text_align_center {
		text-align: center;
	}

	/* flex */
	.flex_1 {
		flex: 1;
	}

	.flex_column {
		display: flex;
		flex-direction: column;
	}

	.flex_row_e_none {
		display: flex;
		flex-direction: row;
		justify-content: flex-end;
	}

	.flex_column_c_c {
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
	}

	.flex_row {
		display: flex;
		flex-direction: row;
	}

	.flex_row_none_c {
		display: flex;
		flex-direction: row;
		align-items: center;
	}

	.flex_row_e_c {
		display: flex;
		flex-direction: row;
		justify-content: flex-end;
		align-items: center;
	}

	.flex_row_c_c {
		display: flex;
		flex-direction: row;
		justify-content: center;
		align-items: center;
	}

	.flex_row_between_c {
		display: flex;
		flex-direction: row;
		justify-content: space-between;
		align-items: center;
	}

	/* width height */
	.width50 {
		width: 50%;
	}

	.width100 {
		width: 100%;
	}

	.width250rpx {
		width: 250rpx;
	}

	.height100 {
		height: 100%;
	}

	/* padding */
	.padding20rpx {
		padding: 20rpx;
	}

	view,
	block,
	botton,
	text,
	picker,
	picker-view picker-view-column {
		box-sizing: border-box;
	}

	.backgroundColor_white {
		background-color: white;
	}